May 20th, 2012. The OpenNebula project announces the general availability of OpenNebula 4.0.1. This is a maintenance release that fixes bugs reported by the community after 4.0 was released. This release only includes bug fixes and it is a recommended update for everyone running any 3.x. or 4.0 version of OpenNebula.

This maintenance release fixes several bugs of the new sunstone interface, and incorporates a mechanism to recover VMs stuck in a transient state, see below for a complete list.

Migrating from previous versions of OpenNebula

If you are upgrading from OpenNebula 3.8 or any other previous version please refer to the information included in the OpenNebula 4.0 release notes.

Acknowledgements

We'd like to thank the great feedback received, it is an essential part of the process that makes OpenNebula a reality, and the primary source of improvement. A detailed list of people that have contributed to OpenNebula 4.0, can be found in the Eagle release notes